Fix block_fee to support NULL values.

Author: arijitAD

statediff/db/migrations/00004_create_eth_header_cids_table.sql

@@ -16,7 +16,7 @@ CREATE TABLE eth.header_cids (
   bloom                 BYTEA NOT NULL,
   timestamp             NUMERIC NOT NULL,
   times_validated       INTEGER NOT NULL DEFAULT 1,
-  base_fee              BIGINT DEFAULT 0,
+  base_fee              BIGINT,
   UNIQUE (block_number, block_hash)
 );
 

statediff/indexer/indexer.go

@@ -219,9 +219,10 @@ func (sdi *StateDiffIndexer) processHeader(tx *sqlx.Tx, header *types.Header, he
 		return 0, fmt.Errorf("error publishing header IPLD: %v", err)
 	}
 
-	var baseFee int64
+	var baseFee *int64
 	if header.BaseFee != nil {
-		baseFee = header.BaseFee.Int64()
+		baseFee = new(int64)
+		*baseFee = header.BaseFee.Int64()
 	}
 
 	// index header

statediff/indexer/indexer_legacy_test.go

@@ -72,7 +72,7 @@ func TestPublishAndIndexerLegacy(t *testing.T) {
 			TD      string
 			Reward  string
 			ID      int
-			BaseFee int64 `db:"base_fee"`
+			BaseFee *int64 `db:"base_fee"`
 		}
 		header := new(res)
 		err = db.QueryRowx(pgStr, legacyData.BlockNumber.Uint64()).StructScan(header)
@@ -82,6 +82,6 @@ func TestPublishAndIndexerLegacy(t *testing.T) {
 		shared.ExpectEqual(t, header.TD, legacyData.MockBlock.Difficulty().String())
 		shared.ExpectEqual(t, header.Reward, "5000000000000011250")
 		require.Nil(t, legacyData.MockHeader.BaseFee)
-		shared.ExpectEqual(t, header.BaseFee, int64(0))
+		require.Nil(t, header.BaseFee)
 	})
 }

statediff/indexer/indexer_test.go

@@ -174,7 +174,7 @@ func TestPublishAndIndexer(t *testing.T) {
 			TD      string
 			Reward  string
 			ID      int
-			BaseFee int64 `db:"base_fee"`
+			BaseFee *int64 `db:"base_fee"`
 		}
 		header := new(res)
 		err = db.QueryRowx(pgStr, mocks.BlockNumber.Uint64()).StructScan(header)
@@ -184,7 +184,7 @@ func TestPublishAndIndexer(t *testing.T) {
 		shared.ExpectEqual(t, header.CID, headerCID.String())
 		shared.ExpectEqual(t, header.TD, mocks.MockBlock.Difficulty().String())
 		shared.ExpectEqual(t, header.Reward, "2000000000000021250")
-		shared.ExpectEqual(t, header.BaseFee, mocks.MockHeader.BaseFee.Int64())
+		shared.ExpectEqual(t, *header.BaseFee, mocks.MockHeader.BaseFee.Int64())
 		dc, err := cid.Decode(header.CID)
 		if err != nil {
 			t.Fatal(err)

statediff/indexer/models/models.go

@@ -36,7 +36,7 @@ type HeaderModel struct {
 	Bloom           []byte `db:"bloom"`
 	Timestamp       uint64 `db:"timestamp"`
 	TimesValidated  int64  `db:"times_validated"`
-	BaseFee         int64  `db:"base_fee"`
+	BaseFee         *int64 `db:"base_fee"`
 }
 
 // UncleModel is the db model for eth.uncle_cids